The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 1998
Filed:
Apr. 30, 1997
Applicant:
Inventors:
Anthony John Allen, Wilmington, DE (US);
George Lock, Newark, DE (US);
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Primary Examiner:
Int. Cl.
CPC ...
B31F / ;
U.S. Cl.
CPC ...
162111 ; 162112 ; 264282 ; 264283 ;
Abstract
A method for creping fibrous webs comprises: (1) applying to a drying surface for the fibrous web a polyamine/epihalohydrin resin creping adhesive; (2) applying a creping release agent that is a plasticizer for the polyamine/epihalohydrin resin and has a swelling ratio of at least 0.10 and a solubility parameter of greater than 20 MPa.sup.1/2 ; (3) pressing the fibrous web against the drying surface to adhere the web to the drying surface, and (4) dislodging the web from the drying surface with a creping device to crepe the fibrous web.